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SIMPLICITY CUSTOM STITCH SELECTION
S
TITCH
A
Straight
A
Zigzag
B
Blindhem
C
3-step zigzag
D
Shell
E
Stretch straight
E
Rick rack
F
Stretch overcast
G
Honeycomb
H
Slant overcast
Buttonhole
TENSION ADJUSTMENTS
The upper thread tension dial controls the amount of needle
thread delivered to the bobbin case. Most thread tension
adjustments should be made using the upper thread
tension dial. In some cases, the lower thread tension on
the bobbin case may need to be adjusted for specialty
sewing techniques.
UPPER THREAD TENSION
The numbers 0-9 on the dial represent upper thread
tension settings. The higher the number, the stronger the
upper tension. Tension settings between 3-5 are most
commonly used [Fig. 1]. In a balanced stitch, needle
thread and bobbin thread interlock in the center of the
two fabric layers [Fig. 2]. If needed, adjust an unbalanced
stitch by turning the dial until the new setting is aligned
with the indicator line on the machine [Fig. 1].
If the fabric gathers or the threads break, the upper thread
tension is too tight [Fig. 3]. Loosen the tension by moving
the dial to a lower number.
If loops form on the under side of the seam then the
upper tension is too loose [Fig. 4]. Tighten the upper
tension by turning the dial to a higher number.
LOWER THREAD TENSION
The lower thread tension can be adjusted by turning the
screw on the bobbin case slightly to the right (clockwise)
to increase the tension [Fig. 5]. Turn the tension slightly to
the left (counterclockwise) to decrease the tension [Fig. 6].
12
S
TITCH
P
ATTERN
WIDTH
0
1-5
3-5
3-5
3-5
0
2-5
3-5
3-5
3-5
4-5
3
4
2
1
S
TITCH
LENGTH
1-4
1-4
4
3
1-3
4
4
4
4
4
.5-1
Fig. 1
Upper thread too tight
Fig. 3
Increase tension
Fig. 5
P
D
RESSER
ROP
FOOT
FEED
All feet
All-purpose
Blind hem
All-purpose
All-purpose
All-purpose
All-purpose
All-purpose
All-purpose
All-purpose
Buttonhole
Fig. 2
Upper thread too loose
Fig. 4
Decrease tension
Fig. 6
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